The only trend is the amount of labor in manufacturing. the US produces just as much or more than any other year. However we do it on far less labor.
Why would any foreign nation even want to manufacture goods to ship here, if there's nothing much to buy with our currency? If our currency does devalue, we run the risk of not being able to import what we need, and not being able to afford to tool up to manufacture it domestically. And yet trends are clear that in many industrial sectors US manufacturing has already fallen to what might as well be zero.
Is it your impression that spa management and pet care are the only working-class service jobs available?
Most of the trades are categorized as service professions in the statistics. So is construction.
I think we both agree that one of us has unrealistic impressions of the big picture here. When we regularly here of layoffs that affect hundreds and thousands of jobs, welders and electricians can't absorb those unemployed to any great degree. Nor all of the trades put together.
There are plenty of jobs. Every person who isn't manufacturing is a person who can do something else. A modern car uses a lot more engineers. While we don't need many spa mangers, it is nice that spas exist and so some of those spa managers are needed.